Extra-dimensional cosmology with domain-wall branes

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dc.creatorGeorge, Damien P.
dc.creatorTrodden, Mark
dc.creatorVolkas, Raymond R.
dc.date2008-10-21
dc.date2009-02-13
dc.date.accessioned2026-07-07T12:42:42Z
dc.date.available2026-07-07T12:42:42Z
dc.descriptionWe show how to define a consistent braneworld cosmology in a model in which the brane is constructed as a field-theoretic domain wall of finite thickness. The Friedmann, Robertson-Walker metric is recovered in the region of the brane, but, remarkably, with scale factor that depends on particle energy and on particle species, constituting a breakdown of the weak equivalence principle on sufficiently small scales. This unusual effect comes from the extended nature of particles confined to a domain-wall brane, and the fact that they feel an "average" of the bulk spacetime. We demonstrate how to recover the standard results of brane cosmology in the infinitely-thin brane limit, and comment on how our results have the potential to place bounds on parameters such as the thickness of domain-wall braneworlds.
dc.description23 pages; v2 has additional references and reflects journal version
dc.identifierhttps://arxiv.org/abs/0810.3746
dc.identifierhttp://arxiv.org/abs/0810.3746
dc.identifierJHEP 0902:035,2009
dc.identifierdoi:10.1088/1126-6708/2009/02/035
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/220169
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Theory
dc.titleExtra-dimensional cosmology with domain-wall branes
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